Light source



FIG. 1 is a top perspective view of a light source showing the claimeddesign;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a left side view thereof, a right side view opposite the leftside view being identical to FIG. 7.

CLAIM The ornamental design for light source, as shown and described.